AK

Akihiro Koyama

NL Nippon Sheet Glass Company, Limited: 38 patents #3 of 836Top 1%
AV Avanstrate: 20 patents #1 of 22Top 5%
Canon: 7 patents #7,830 of 19,416Top 45%
HO Hoya: 6 patents #201 of 1,290Top 20%
KA Kao: 6 patents #545 of 3,221Top 20%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
SO Sony: 2 patents #12,963 of 25,231Top 55%
OL Olympus: 2 patents #1,626 of 3,097Top 55%
FC Fuji Electric Co.: 1 patents #1,354 of 2,643Top 55%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
JA Jatco: 1 patents #458 of 871Top 55%
TC Takara Co.: 1 patents #53 of 93Top 60%
TC Threebond Co.: 1 patents #61 of 172Top 40%
TC Threebond Fine Chemical Co.: 1 patents #5 of 31Top 20%
YA Yazaki: 1 patents #2,077 of 3,427Top 65%
KO Komatsu: 1 patents #1,163 of 2,087Top 60%
MA Marktec: 1 patents #2 of 6Top 35%
Overall (All Time): #19,932 of 4,157,543Top 1%
85
Patents All Time

Issued Patents All Time

Showing 76–85 of 85 patents

Patent #TitleCo-InventorsDate
6054401 Fireproof sheet glass Kiminari Sugiura, Tetsuro Yoshii 2000-04-25
6020672 Surface acoustic wave converter with improved frequency characteristics, surface acoustic wave device using such converter, and communication system using such device Akane Yokota, Akira Torisawa, Koichi Egara, Tadashi Eguchi, Takahiro Hachisu 2000-02-01
5962950 Compact surface acoustic wave apparatus, spread spectrum signal receiver using the same apparatus for reception of spread spectrum signal, and spread spectrum signal communication system using the same spread spectrum signal receiver Koichi Egara, Akira Torisawa, Tadashi Eguchi, Takahiro Hachisu, Akane Yokota 1999-10-05
5925583 Heat-resistant glass composition Tetsuro Yoshii, Hiroyuki Tanaka, Nobuyuki Yamamoto, Shigekazu Yoshii 1999-07-20
5815055 Matched filter with improved synchronous characteristics, and reception device and communication system using the same Tadashi Eguchi, Akira Torisawa, Koichi Egara, Takahiro Hachisu, Akane Yokota 1998-09-29
5760525 Surface acoustic wave device and communication system using it Takahiro Hachisu, Akira Torisawa, Norihiro Mochizuki, Koichi Egara, Tadashi Eguchi 1998-06-02
5717274 Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same Tadashi Eguchi, Akira Torisawa, Norihiro Mochizuki, Koichi Egara, Takahiro Hachisu 1998-02-10
5708402 Surface acoustic wave device improved in convolution efficiency, receiver using it, communication system using it, and method for producing surface acoustic wave device improved in convoluting efficiency Takahiro Hachisu, Norihiro Mochizuki, Koichi Egara, Tadashi Eguchi, Akane Yokota 1998-01-13
5477098 Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same Tadashi Eguchi, Akira Torisawa, Norihiro Mochizuki, Koichi Egara, Takahiro Hachisu 1995-12-19
5010041 Colored low-expansion transparent glass ceramic Keiji Kitamura, Nobuyuki Yamamoto 1991-04-23